The Girard Perregaux 21.29 is an automatic chronograph watch movement introduced in 2003. It features a 60-second, 30-minute, and 12-hour chronograph function with cam switching. The movement also includes a sub-second display and a quickset date function. Additionally, it offers a dual time feature with a 24-hour display that can be quickly adjusted. The Girard Perregaux 21.29 has a hack feature, allowing for precise time synchronization. It is equipped with shock protection and operates automatically. The movement also incorporates a calendar function. The Girard Perregaux 21.29 has been in use since 2003.